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Finding the Fourth Proportional to 99,344.40, 149,016.60 and 73,165.20

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Solution

The fourth proportional to 99,344.40, 149,016.60 and 73,165.20 is: 109,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,344.40 : 149,016.60 = 73,165.20 : x
  2. Step 2: Convert to fraction form
    99,344.40/149,016.60 = 73,165.20/x
  3. Step 3: Cross multiply
    99,344.40x = 149,016.60 × 73,165.20
  4. Step 4: Simplify right side
    99,344.40x = 10,902,829,342.32
  5. Step 5: Solve for x
    x = 10,902,829,342.32/99,344.40
  6. Step 6: Final answer
    x = 109,747.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.